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When installing an external recirculation pump on a SENSEI™ tankless water heater (non-RUR models), the external pump wire harness (part number 105000250) must be purchased separately. SENSEI™ tankless water heater models (non-RUR) include:

• RU199i/e

• RU180i/e

• RU160i/e

• RU130i/e

• CU199i/e

• CU160i/e

For complete instructions on installing and wiring an external recirculation pump on a SENSEI™ tankless water heater, refer to the “Rinnai Tankless Water Heater Installation and Operation Manual.”

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